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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [SNB] Full/Limited Color range not working automatically for 1000/1001 CEA modes"
href="https://bugs.freedesktop.org/show_bug.cgi?id=46800#c22">Comment # 22</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [SNB] Full/Limited Color range not working automatically for 1000/1001 CEA modes"
href="https://bugs.freedesktop.org/show_bug.cgi?id=46800">bug 46800</a>
from <span class="vcard"><a class="email" href="mailto:daniel@ffwll.ch" title="Daniel Vetter <daniel@ffwll.ch>"> <span class="fn">Daniel Vetter</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=46800#c21">comment #21</a>)
<span class="quote">> The quantization range signaling doesn't seem to be working on Haswell.
>
> I am outputting from a D54250WYK NUC to Pioneer KRP-500m (via Yamaha
> RX-A1000) and seeing grey blacks with the default limited RGB range. When I
> switch to full range using xrandr, picture is fine. I assume my monitor
> supports switching RGB range automatically as my bluray player is able to
> signal it (switch player output RGB range between full and limited,
> displayed black levels do not change; I can verify that the output range
> really changes by setting input range manually in the Pioneer).
>
> There are more people in the xbmc forum nuc thread (see for example starting
> at <a href="http://forum.xbmc.org/showthread.php?tid=176718&pid=1548847#pid1548847">http://forum.xbmc.org/showthread.php?tid=176718&pid=1548847#pid1548847</a>)
> reporting grey blacks with the default setting, so it's probably not just my
> system. Based on
> <a href="http://forum.xbmc.org/showthread.php?tid=176718&pid=1552262#pid1552262">http://forum.xbmc.org/showthread.php?tid=176718&pid=1552262#pid1552262</a> (and
> the few comments following), same issue may be present on earlier chipsets
> too.
>
> Unfortunately I don't have access to an HDMI analyzer. Is there any other
> way I could supply useful data?
>
>
> For best quality it would be nice to have full range output, but have the
> ability to signal limited range if desired. This would preserve
> blacker-than-black, whiter-than-white and avoid banding from luma range
> expansion.</span >
Please file a new bug and provid details about your kernel (booting with
drm.debug=0xe and dmesg preferred, it's all in there).</pre>
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